Arrhythmic telewriter



'Oct l; 1.940. l 2,216,643 JEAN EsTouP, ALsc KNowNAs HENRI EsrouPAnnuYTmlIc TELEwITzR Filed Juno 18, 1956 4 sinds-Sheet fwd'.

ocu 1. 1940.y ,y y 2,216,643' f y JEAN EsToUP, ALSO KNOWN As HENRI ESTOUP A Anm-xY'rx-nuc femmina 'nua Junon. lags 4 sun-shuts v JEANESTOUP, ALSO KNOWN AS HENRI ESTUP ARRHYTHIIC TELEWRITER Filed June 18,1936- 4 Sheets-Sheet 4 Patented Oct. 1, 1940 f UNITED STATES fARRHYTHMIC TELEWRITER' Jean Estoup, also known as Henri Estoup,Montrouge, France Appneation June 1s, 1936, serial No. 85,969. i

In France June 19, 1935 17 Claims.

This invention relates to a new' telegraphic apparatus of the so-calledarrhythmic type, emitting and receiving signals composed of '7 impulsesin accordance vwith the international code,

5 writing either on a tape, or on a sheet of paper, by means of anralphabetical keyboard similar to that of typewriters.

In the apparatus forming the subject-mattei' l of the present invention,the transmission is ef- 0 fcc-ted through the medium of an automaticsending key, the contacts of which are set in position by a Amechanismprovided with 5 combs, actuated by the keys and the' currents of whichare trans- 1 mitted to the line through the medium of contacts carriedby a iirst plate in front of which move brushes which are started bydepression of a key, the stoppage automatically taking place as'soon asthe combination typed has been transmitted.

The. apparatus gives a contro-l translation of the letter emitted bymeans of a set of levers controlling a printing mechanism provided withtype bars and similar to that of ordinary typewriters.

The reception is effected by means of a second plate opposite which movebrushes which direct the local currents, arising from a relay fed by theline currents, on switching electromagnets similar to' those ofBaudotap-paratus and which control thevtranslation mechanism inconditions identical to those of the translation controlling thetransmission.

The apparatus, which is provided with all the mechanisms of an ordinarytelewriter, is moreover .provided with a two-color ribbon mechanism,which'latter will be extremely useful on the telewriter-the apparatuswriting in black all the signals received, and in red all thesignalsemitted, for instance, the differentiation of the parts transmitted andof the parts received, which is essential, will thus be very visible andimmediate; and, on apparatus writing on a sheet, itis provided with areturn mechanism, lsimilar to those of ordinary typewriters, themanipulation of which will move both associated carriages aspace backand which will be indispensable on a machine on which the operator couldup to now correct his errors only by writing XX and by beginning thewrong or faulty part over again, this compelling his correspondent tolook for eventual errors and to. rectify them by hand.

. The motor actuating the mechanisms is started ry the depression ofvany key, or by the reception of a start impulse; it is maintain-ed inoperation by the transmission or reception of any signals andautomatically stops'40 seconds after the transmission or reception ofthe last signal.

The emission ror reception of the figures combination moves all thertype bars, secured on a sector, to 'gures,postion. The emission or 5reception ofthe letters combination restores all the type bars toletters position.

The emission or reception, in fgures position, of the combination Jactuates a call bell. The reception,'in 'gures position, of thecombination D locks a device emitting` a call signal. f Y

In the receiving apparatus writing on av tape, the type strike upon thepaper driven by a wheel the forward movementof which is caused by a pawlafter each depression of a type bar key.

In the receivingapparatus writing on asheet, the paper is held, by 'apressure device; on a roll or cylinder carried by a carriage lwhichlmoves to the extent of one space after'eachdepression 20 of a type barkey bythe action of an escapement identical to those'of typewriters. lThe striking or the combination return'iof the carriage causes'theengagement oa device which'brings back the paper to' thebegin'ning ofthe line. The 25 striking of the combination i between lines causes thepaper to advance Vtc 'the extent of one line. The striking,4 in,'guresposition, of' the combination F, moves the carriage back one sp-ace inther same conditions as the "return mechanism of typewriters.

It is to lbenoted that the apparatus forming the subject-matter of thepresent patentutilises plates swept by brushes for the transmission andreception, preferably to'any other' device, such as contacts operated bycams, etc., the said mechanism` giving the possibility of utilising atthe reception shortened contacts, at lthe transmission and at 'thereceptioncoritacts for discharging the line, in all cases contacts ofrigorously determined duration, and of'a receiving relay allowing tooperate on'theline with currents'of very-` small intensity; 'thecombination of these devices ensures satisfactory `reoep't'ion's'onlines either very long, or of great capacity, and, all the more, onshort l linesof small capacity. l

It isv also to be noted that'the control translation is effectedmechanically, without `the intervention of any'electric device, thisallowing Ato further improve the telegraphic 'qualities of the apparatusby avoiding the operation in series or in parallel of two relays, one ateach end of the line,]fand to give tothe control translation a fixed.'and extremely'lsh'ort duration, of the order 55 of 8 hundredths ci asecond, after the depression of each key, so that the typist has not theextremely disagreeable sensation of typing out of time when the controltranslation is effected by the apparatus, as this is usually done onactual telewriters, 15 to 25 hundredths of a second after depression ofthe key.

It is also to be noted that each of the apparatus connected is, when itsmotor is operating and in the absence of any emission, in position forreception; it suiiices for any one of the two typists to depress a keyin order that his apparatus should come in position fortransmission, thesecond one receiving the currents emitted without having any mechanismto manipulate for placing, previously to the typing, one of theapparatus in position for transmission and the other in position forreception. i

It is further to be noted that the time necessary for the transmissionof a combination is of 15 hundredths of a second and the time necessaryfor its electric reception of 12 hundredths of a second, the diiferenceof 3 hundredths of a second provided being sucient for ensuring, on theone hand, the operation ofthe locking device of the receiving brushesand, on the other hand, the taking up of the differences of synchronism,ever important, between the two apparatus.

It is finally to be noted that the switching electromagnets have toexert, as those of Baudot apparatus, only an extremely small mechanicaleffort, so that they are very positive in operation.

The invention will be clearly understood from the complementarydescription given hereinafter and from-the accompanying drawings, whichare of a diagrammatic nature and given particularly by way of example.In these drawings:

Fig. l is a diagram of the electric circuits of the apparatus.

Fig. 2 shows the connections for starting and stopping the motoractuating the mechanisms.

Figs. 3 and 4 illustrate the mechanism for selecting, transmitting andtranslating the signals manipulated, as Well as the mechanism fortranslating the signals received.

Fig. 5 illustrates the locking device for the cams and transmissionbrushes.

Fig. 6 shows the locking device for the receiving brushes.

Fig. 7 illustrates the escapement control for the carriage.

Fig. 8 shows the carriage return mechanism.

Fig. 9 illustrates the line spacing mechanism.

OPERATION or THE APPARAros-Electric circuits.-The drawings show theelectric circuits of the apparatus arranged for operating with doublecurrent.

The apparatus essentially comprises a transmitting plate I, a receivingplate 2, an automatic sending key 3, a relay 4, a starting electromagnet5, a series of 5 switching electromagnets 6a to 5e, and a local supplydevice 1.

At rest, the brushes 8 and 9 give the line to the receiving relay 4, theline current holding the armature oiv the relay on the rest position.The receiving brushes II give the local positive current tothe startingelectromagnet 5, but the starting circuit is held open by the restcurrent'.

When a key is depressedfthe beginning of the stroke has for effect toplace, through a mechanism described later on, the contacts of theautomatic sending key 3v in the required position. For typing `thecombination A, shown on the drawings,.the contact Ial is connected tothe positive pole, as well as the contact Ib, and the contacts Ic, Idand Ie are connected to the negative pole.

The end of the displacement of the key causes, through a mechanismdescribed later on, the locking of the shaft carrying the transmittingbrushes. The brushes 8 and 9 are driven by the mechanism at a constantspeed of 200 revolutions per minute.

The brush 9 reaching the point I2 puts in communication, through themedium of the contact I3 and resistance I4, the relay 4 with thepositive local current, thus holding the armature on the rest positionduring the entire emission and preventing a false starting of thereceiving brushes.

When the brush 8 reaches contact I5, it puts the line in relation withthe negative pole, giving the starting impulse, then with the contactsof the automatic sending key 3, transmitting the required combination,finally, through contact I6, with the positive pole, giving the stopimpulse. The shaft of the transmitting brushes stops after havingeffected half a revolution when the brushes have reached the restposition, brush 8 taking the place of brush 9, and vice versa. Each ofthe brushes has thus alternately for function to transmit, and to holdthe receiving relay stationary.

When the apparatus, in rest position, receives a negative startingimpulse, the armature of the relay moves, supplying local current to thestarting electromagnet 5 which, through a locking device described lateron, causes the receiving brushes II to start for effecting onerevolution, at the constant speed of 500 revolutions per minute. Thereceiving crown has 6 useful contacts and 5 insulated contacts, the linecurrents are received on shortened contacts as on Baudot apparatus. Eachuseful contact is therefore reached, as will be shown by a simplecalculation, 2 hundredths of a second after the preceding one, thisensuring the synchronism between the two apparatus.

The brushes reaching contact 2a transmit, if, at this moment, the relayreceives a positive impulse, the local current to the electromagnet 6a,and nothing if it receives a negative impulse. The releasing device itcontrols operates therefore if th-e impulse a received by the relay ispositive, and it remains stationary if this impulse is negative.

The electromagnets Ii-b, 6c, 6d and 5e are likewise supplied withcurrent if when the brushes pass in front of their respective contacts,the relay receives a positive impulse, and said electromagnets remain atrest if the relay receives a negative impulse.

When passing opposite the rest position, a device described later onrestores the brush I I to rest.

In order to provide the time necessary for starting the brushes, whichtime is variable according to the adjustment of the starting device, thereceiving sector can be moved about the shaft I 'I for setting it aswith Baudot apparatus. The setting will be effected by local current.

The apparatus can also be arranged for operating with simple currentsupplied by a central battery, the interruptions of passage of thecurrent taking the place of the negative impulses. The relay is soadjusted as to be held at rest by the positive permanent line currentfor which the positive local current is substituted during thetransmission.

l fl

Starting and automatic stopping of the motor.-The motor I8 is connectedto the mains through the medium of a mercury switch I9 secured on aplate 2|), and a disc lightly rubbing against said plate tends to causeit to rock, under the action of the movement of the motor and throughthe medium of a suitable gearing down device, in a clockwise direction.In the absence of any emission, disconnection takes place in 40 seconds.

Tne plate 20 is restored to working position Vby the startingeleotromagnet 2l connected to the mains through the medium of twocontacts 22 and 23 respectively held open, as described later i on, bythe lever for starting the receiving brushes and by the lever used forlocking the transmission cams.

If a key is depressed, the contact 23 is. closed, thus closing, for halfa revolution of the transmission brushes the circuit of thestartingelectro-magnet 2l. The motor starts and each depression of a keyrestores the switch to working position. If the apparatus receives anegative impulse, the relay supplying local current to the startingelectromagnet `5, releases the lever starting the receiving brushes,thus causing the closing oi contact 22 for one revolution of the brushesand, consequently, the starting of the motor. The reception proceeding,the switch is restored by each depression of a. key to working position.

Transmittzng mechanism and control translation-f it is assumed that themotor of the apparatus is operating and that the operator desires towrite the letter A, by depressing the key 2G, he causes the key lever 25to rock about the pivot pin 2t. The letter A includes, besides thenegative start emission and the positive stop emission, two vpositiveemissions followed by three negative emissions.

The selecting comb 21a carries, at its lower part, inclined projectionsfacing th-e key levers controlling a positive a impulse, and a gapfacing 'the key levers controlling a negative a impulse. Likewise, thecombs 21o, 21o, 21d, 21e are moved towards the right when thecorresponding impulse is positive, and they remain in position when itis a negative impulse.

The depression of the key A vtherefore causes the displacement, towardsthe right, of the combs 21o and 21o, which push the correspondingtransmitting levers 28a. and l281), these latter, rocking about thepivot pin 29, strike against the armature of the electromagnets 30a and30D.

The armature of the electromagnets 30a and 323D, when it rocks, releasesthe corresponding switches .3|a and 3lb. The latter, under the action oftheir springs 32a and 32h, fall and face the .points .33 of thecorresponding rocking levers 34a. and 3th.

Thus, when, the key lever is at 2 millimeters from the end of itsdisplacement, the combination A is recorded in the switches 3|, theswitches which have fallen lrepresenting a positive impulse, and theswitches have remained in position, a negative impulse.

The depression of the key continuing, the universal bar 35, pushed bythe key lever 25, comes in engagement with the lever locking thetransmission shaft 36 which causes, as described later on, the lockingof the shaft carrying the brushes and the transmitting cams.

When the sleeve Iof the transmitting cams 31 starts, the switching campushes the transmission lever 33, which causes the lever 39 to rockabout the pivot pin 4|, said lever 39 carrying a pin 40 on which aresecured the rocking levers 34. This movement has for effect to projectthe entire set of rocking levers 34 towards the switches 3|. Those ofsaid rocking levers 34 which engage with a raised switch rock in alcounterclockwise direction, moving the corresponding controller comb 42from right to left; those which engage with a fallen switch rockin aclockwise direction, moving the corresponding controller comb 42 fromleft to right.

Each of the controller combs is held in the position where it has beenpushed back by a roller 43 pressed 'by a spring 44. It moves the Contact45 towards one or the other of the abutments 46, connected to thepositive pole, or 41 connected to the negative pole. The set of contactsconstitutes the automatic sending key.

' The ycombination typed is therefora'immediately after starting thetransmitting cams, recorded, on the one hand, in the automatic sendingkey and, on the other hand, in the controller constituted by the set ofcontroller combs.

The controller combs 42 are provided, at their upper part, with a seriesof notches so made that the comb presents a gap to all the selectinglevers 48 the combination of which corresponds to the position ,given tothe corn-b 42, and a solid portion to all those the combination of whichdoes not correspond` to this position.

The rotation of the transmitting shaft continuing, the emission iseffected, as above stated, by the transmitting plate. At the same time,the .apparatus gives the control translation by means of the followingmechanism: Y v

The selecting levers 48 are constantly urged to fall by their own weightand by the spring 49. They are held in raised position. by the plate'lof the universal bar on which they bear through the medium of a roller52. Thetransmitting shaft drives a striking cam which, through Va set oflevers (not shown), causes the universal bar .5| to rock in acounterclockwise direction. ,During the first portion of thedisplacement, the plateli lowers, allowing all the .Y

selectingv levers. 48 tofall. As a solid portionrof a controller comb 42is suiiicient for stopping each lever, they will all be stopped, exceptthe lever A, the combination of which has been .stored in the combs 42.

When the lever A falls, the plate 5i! comes in engagement with the sameand pushes it from right to left, determining the depressing movement ofthe type bar 53 by means-of a set of levers. The other selecting levers,which have remained lifted, are not engaged by the universal vbar 5|.

YUpon return movement of the universal bar 5 I the plate 5D lifts, fromthe beginning of its displacement, the roller 52 and the .selectinglever 4.8, giving to the striking levers the time necessary forreturning to rest, without said levers hindering the movements of thecontroller combs 4.2 for recording andtyping a new combination. t.

" The sleeve of the transmitting cams ycarriesa so-called locking camwhich, by means `of a series of levers (not shown) acts on the universalbar 35. The .locking cam carries a projection which, after one hundredthof a second, .strikes :upon the universal bar, giving to the typist thetactile order to raise `the finger. yThe touch of the machine vwill thusapproximate that of type- Writers.' Ten hundredths of a second after thelbeginning of the transmission, the locking cam completely lifts theuniversal bar 35 and, consequently, the whole of the keys.

Under protection of this locking of the key levers, a so-called switchreturning cam pulls towards the left a link 54, which causes the bentlever 55 to rock about a pivot pin 56. 'I'he lever 55 is held by areturning spring 51. By rocking, said lever 55 raises, by means of a rod58 it carries, all the switches which have fallen and restores them totheposition of rest, where they are held by the armature of thecorresponding switching electromagnet.

The apparatus is thus ready for a new typing operation and fortransmitting the corresponding combination.

The auxiliary comb 59 carries a projection which, bearing on a roller,holds it in the position where it has been left by the last movementimparted thereto. It is pushed back towards the left by the letters key,and to the right by the figures key, or reversely.

It locks in letters position the 1, 2, 3, 4, 5, 6, 7, 8, 9, Zero, callsignal, carriage return and bell keys, and in figures position the Q, W,E, R, T, Y, U, I, O, P, D, F and J keys.

The auxiliary comb 66 carries two inclines operated by the figures andletters selecting levers in conditions similar to the auxiliary comb 59.It prevents, in figures position, levers D, F and J from falling, and,in letters position it prevents the fall of the levers controlling thecall signal emitting, carriage return, and bell movements.

Engagement for transmission- The transmission shaft 6| carries a notchedsleeve 62. Said shaft 6| drives a toothed sleeve 63 which, sliding withslight friction on a square portion of the sleeve 62, can come inengagement with a toothed sleeve 65, rigid with a gear wheel 64, looselyrotatingabout shaft 6| at a constant speed of 200 revolutions perminute.

The sleeve 62 is provided with two diametrally opposed notches intowhich enter, in position of rest, a roller 66 carried by a lever 61,which can come in engagement with the universal ba-r 35 of the keylevers 25. The lever 61, restored by a spring 68, pivots about the pivotpin 69. It drives, through a roller 16, the sleeve 63.

When the universal bar 35, at the end of its displacement, pushes thelever 61, it causes it to rock about its pivot pin 69. The roller 66,withdrawing from the notch of the sleeve 62 in which it extends,releases the latter. At the same time, it drives, through the roller 16,the sleeve 63 which comes in engagement with the sleeve 65.

Immediately after this engagement has been effected it is maintained bythe roller 66 bearing on the sleeve 62, until the roller 66 enters anotch, this occurring after half a revolution. At this moment, the lever61, under the action of its returning spring 68, moves the two rollers66 and 10 from left to right, causing the disengagement andimmobilisation of the transmission shaft in a rigorously deniteposition.

In engaged position, the lever 61 presses, by its end 1 I, on a contactblade 12, thus establishing a starting contact which is maintainedduring all the time the engagement lasts, that is to say during half arevolution of the brushes at Ieach transmission.

Reception- The receiving brushes (not shown) are rigidly secured on` ashaft 13, which can be driven by a fork 14 carrying a roller 15 and amember 16. The fork 14 can pivot about a fictitious axis constituted bytwo diametrally opposed pivots 11 and 18 secured on a sleeve fast on theshaft 13. A toothed wheel 19, carrying a toothed sleeve 80, looselyrotates on the shaft 13.

At rest, the roller 15 rests` at the bottom of a notch provided in afixed sleeve 8|. Said roller 15 is held at the bottom of the notch bythe pressure of a roller 82 carried by a lever 83 which can rock about apivot 84 carried by a lever 85 held in position of rest by the armatureof a starting electromagnet 86. A spring 81 holds the roller 15 at thebottom of its notch. A spring 88 lconstantly restores the lever 85.

When the relay receives a negative impulse, its armature, by moving,sends a local current in the startingelecromagnet 86, the attractedarmature of which releases the lever 85, moving the roller 15 from leftto right.

The fork 14 rocks about its pivots 11 and 18 and the toothed part 16meshes with the teeth of the sleeve 80, causingthe starting of shaft 13.When the engagement is effected, it is maintained by the roller 15bearing on the sleeve 8|.

After three-quarters of a revolution, the roller 15 pushes back a roller89 carried by a lever 99 which rocks, causing the engagement, for onerevolution of the shaft, `of the receiving cams with a toothed wheelloosely rotating about said shaft at a constant speed of 500 revolutionsper minute, by a device similar to the engaging device (Fig. 5) of thetransmission shaft 6|.

At the end of its revolution, the roller 15 engages with a boss 9|formed on the lever 85. The latter, being pushed back, rocks about itspivot pin 92, allowing the return of the armature ofthe startingelectromagnet 86, which arma.- ture prevents the return of the lever 85.The roller 15 the-n engages with the roller 82 which, under the pull ofthe spring 81, rapidly pushes it back to the bottom of the notch formedin the Xed sleeve 8|, thus causing sudden stoppage, in a rigorouslydefinite position, of the shaft carrying the receiving brushes.

At rest, the boss 93 provided o-n the lever 85 presses upon a contact 94connected to the electromagn-et used for starting the motor. When thelever 85, under the action of the negative start impulse, rocks, acontact 94 is closed for one revolution of the receiving brushes, thusmoving, as above stated, the mercury switch |9 to working position.

The translation of the signal received is effected in conditions verysimilar to the control translation.

The positive currents received by the relay give rise to the generationof local impulses directed by the contacts of the receiving plate on theswitching electromagnets. 'Ihe combination thus recorded is stored bythe controller combs, and then translated. 'I'he switches are restoredto rest immediately after the switching of the controller combs byseries of levers operated by the receiving cams in a manner similar tothe control translation.

Call signal emitter.-When the apparatus receives the combination callsignal, a set of levers (not shown) causes the engagement of the clutchsimilar to that of the trans-mission shaft which drives a shaft 95 atthe constant speed of one revolution in 3.3 seconds. Fingers 96, securedon the shaft 95, successively come in engagement with projections 91carried by corresponding lever's 98, which automatically manipulate theemission of the call signal.

For preventing the demand for a call signal from causing falseengagement of the emitter of the demanding station, the levers are soarranged that'the engagement can take place only if the transmissionshaft is in position of rest. Change of figures and lettera-The changeof letters and .change of figures levers respectively move, through amechanism similar to that well known in typewriters, the typebarcarrying segment to such a position that it prints either in letters,or in figures.

Translation on a sheet- The paper is clamped on a r'oll or cylindercarried by a carriage similar to those of typewriters. The carriage issubjected to the constant pull of a barrel spring 99 which tends toconstantlydrive in the direction for writing.

The advance to the extent of one space after each typing of a letter orgure is obtained by an escapement similar to those of typewriters andoperated by the universal bar The movement of the universal bar 5| istransmitted to the escapement by a lever |0|, pushed by a member |02pivoting about a pivot pin |03 carried by the universal bar 5|. At rest,the transmission of the movement is ensured by the member |02 bearingona lever |04 rocking about a pivot pin |05 carried by the universal bar5|. The lever |04 is constantly pulled by a spring |06. It pushes backin a counterclockwise direction an auxiliary bar |01, which rotates withslight friction about the pivot pin |08 o-f the universal bar 5|. y Ifit is assumed that the controller combs allow the fall of a lever |09actuating a type bar, the spring |06 holds the members |04 and 5|intheir respective positions, and the lever |02, being supported by thelever |04, actuates the lever |0| which causes the block |00 to rock,determining the escapement. v

All the selecting levers determining movements, change of letters,change of figures, return of the carriage, line spacing, back spacing,ringing of the bell, emission of call signal, are grouped to the left infront of the auxiliary bar |01. v

If it is assumed that the controller combs f allow the fall' of a lever||0 actuating a mechanism, the bar 5|, during the rst portion of itsmovement, will push the auxiliary bar |01 against the selected lever.The bar |01, rocking about the pivot pin |08, actuates the lever |04which, rocking about the pivot pin |05, will move and come opposite thenotch provided in member |02.. The latter, being no longer supported bythe lever |04, rocks in space and the remainder of `the movement of theuniversal bar actuates the mechanism without causing escapement. y

Return of the carriage.-ll1e shaft driven at a constant speed by asuitable set of gears, carries at its end a square .portion on whichslides with slight friction the male cone ||2 of a clutch, the femalecone ||3 of which actuates a pinion ||4 meshing with `a rack ||5 carriedby the carriage.

When Athe carriage return combination is transmitted or received, theselecting lever IIB transmits its movement, through a set of suitablelevers, to a disengaging pawl ||1. The latter, when rocking, releasesA alever ||8 which, being subjected to the pull of a spring I9, moves thecone ||2 upwardly. The engagement is effected and the carriage isreturned at a constant speed. n c When the carriage has reached thegraduationfrO, la finger |20 abuts against a finger |2| carried by thelever I8. The latter is actuated,

and, on the other hand, the return of theA disengaging pawl ||1, whichlocks the lever ||8 and prevents a new engagement as long as theapparatus has not received a new' carriage return signal.

Line spacing-The selecting lever |22 actuates, through a suitabletransmissionl a bar |23 which rocks about its pivot pin |24. The bar|23, pushing a roller |25, causes a lever |26 to rock about its pivotpin |21 whatever may be the position of the carriag-e. A pawl |28,carried by the lever |20, actuates a ratchet |29, causing the paper toadvance to the extent of one line. T'he regularity of line spacing isensured by a roller |30 carried by a powerful spring 3| and whichpermanently engages with the teeth of the ratchet |29.

Back spacing-As stated, the apparatus is provided with a back spacingmechanism similar to those of ordinary typewriters and operated by thecorresponding selecting lever by means of a suitable set of levers.

Translation. on a tapa-The tape is driven by a roller so arranged as toleave the writing constantly visible. It moves forward under the actionof the universal striking bar in the same conditions as the escapementis produced for the translation on a carriage, by means of a ratchetdriven by a pawl and held by a roller pressed by a spring.

Two-color ribbon mechanism-As stated,A the apparatus Writes by means ofa two-color ribbon. At rest, the ribbon-carrying fork is low'- ered,leaving the writing entirely visible. starting of the receiving camslifts the ribbon to such yan extent that it writes in black; thestarting of the transmitting cams lifts the ribbon to such an' extentthat it writes in red, for

instance.

' The invention is not limited in any way to the form 0f constructiondescribed above and illustrated, and modifications can be made theretowithout departing thereby fromv the scope of said invention.

What I claim .as my invention and desire to secure by Letters Patent is:

1. Telegraphic apparatus of the start-stop type comprising incombination a keyboard having keys acted upon by anzoperator, laselecting mechanism combined with the keys of said keyboard determiningthe polarities of the impulses to be transmitted when a key isdepressed, a mechanism effecting the transmission to a distance of apredetermined combination according to the condition of memberscontrolling the polarities of the impulses when a keyof said keyboard isactuated and a mechanism effecting the translation of a predeterminedcombination according to the condition of controller members,characterised by the f-act that said. members controlling thetransmission polarities and said translation controller members arepermanently combined and generally independent of said selectingmechanism yactuated by the keys of said keyboard.

" 2. Tfelegralphic apparatus of the start-stop type comprising incombination al keyboard having keys acted upon by an operator, aselecting mechanism combined with the keys of said keyboard determiningthe polarities of the impulses to be transmitted when la key isdepressed, a mechanism effecting the transmission to a dis- The` tanceof a predetermined combination according to the condition of memberscontrolling the polarities of the impulses When a key of said keyboardis actuated, a mechanism eifecting the translation of a predeterminedcombination according to the condition of controller members permanentlycombined with said members controlling the transmission polarities andgenerally independent of said selecting mechanism actuated by the keysof said keyboard and a mechanism actuated by said transmission mechanismplacing in position said members controlling the transmission polaritiespermanently combined With said translation controller members accordingto: the condition of said selecting mechanism combined with the keys ofsaid keyboard during the transmission of the start impulse when a key ofsaid keyboard is actuated.

3. Telegraphic apparatus of the start-stop type comprising incombination a keyboard having keys acted upon by an operator, aselecting mechanism combined with the keys of said keyboard determiningthe polarities of the impulses to be transmitted when a key isdepressed, a mechanism effecting the transmission to a distance of apredetermined combination according to the condition of memberscontrolling the polarities of the impulses when a key of said keyboardis actuated, a mechanism effecting the translation of a predeterminedcombination according to the condition of controller members permanentlycombined with said members controlling the transmission polarities andgenerally independent of said selecting mechanism actuated by the keysof said keyboard, a mechanism actuated by said transmission mechanismplacing in position said members controlling the transmission`polarities permanently combined with said translation contro-llermembers according to the condition of said selecting mechanism combinedWith the keys of said keyboard during the transmission of the startimpulse and a translation mechanism eiecting the translation of saidcombination according to the condition of said translation controllermembers permanently combined with said members controlling thetransmission polarities during the transmission of the Work impulses ofsaid combination when a key of said keyboard is actuated.

4. Telegraphic apparatusv of the start-stop type comprising incombination a keyboard having keys acted upon by an operator, aselecting mechanism actuated by the keys of said keyboard, a mechanismveffecting the transmission to a distance of a predetermined combinationWhen a key of said keyboard is actuated, a translation mechanism havingprinting means operably associated therewith, a controller translationdevice controlling said translation mechanism, means for effecting thecontrol of the printing means of said translation mechanismcorresponding to the depressed key of said keyboard during thetransmission of the Working impulses of said combination, a device rigidWith the controller translation device for effecting the transmission ofthe combination corresponding to the depressed key, a rotary receivingmechanism capable of being actuated by the current impulses received andan impulse recording mechanism placed in position by said selectingmechanism When a key is depressed.

5. Telegraphic apparatus of the start-stop type comprising incombination a keyboard having keys acted upon by an operator, aselecting mechanism actuated by the keys of said keyboard, a mechanismeffecting the transmission to a distance of a predetermined combinationWhen a key of said keyboard is actuated, a translation mechanism havingtype printing Ameans associated therewith, a controller translationdevice controlling said translation mechanism, means for eiecting thecontrol printing of the type of said translation mechanism correspondingto the depressed key of said keyboard during the transmission of theworking impulses of said combination, a device rigid with the controllertranslation device for effecting the transmission of the combinationcorresponding to the depressed key, a rotary receiving mechanism capableof being actuated by the current impulses received and an impulserecording mechanism placed in position by said selecting mechanism whena key is depressed, at the very instant it is struck and by said rotaryreceiving mechanism in proportion as the Working impulses are rece-ived,upon reception of a combination.

6. Telegraphic apparatus of the start-stop type comprising incombination a keyboard having keys acted upon by an operator, aselecting mechanism actuated by the keys of said keyboard, a mechanismeffecting the transmission to a distance oi a predetermined combinationwhen a key of said keyboard is actuated, a translation mechanism havingtype printing means, a controller translation device controlling saidtranslation mechanism, means for eifecting the control printing of thetype of said translation mechanism corresponding to the depressed key ofsaid keyboard during the transmission of the working impulses of saidcombination, a device rigid with the controller translation device foreffecting the transmission of the combination corresponding to thedepressed key, a rotary receiving mechanism capa-ble of being actuatedby the current impulses received, an impulse recording mechanism placedin position by said selecting mechanism when a key is depressed, at thevery instant it is struck, and by said rotary receiving mechanism inproportion as the Working impulses are received upon reception of acombination, and 4a mechanism for placing in position said transmissioncontrol device rigid with the controller translation device during thetransmission of lthe start impulse according to the position occupied atthis moment by said impulse recording' mechanism when a key of saidkeyboard is actuated.

7 Telegraphic apparatus of the start-stop type comprising in combinationa keyboard having keys acted upon by ,an operator, a selecting mechanismactuated by the keys of said keyboard, a mechanism effecting thetransmission to a'distance of a predetermined combination When a key ofsaid keyboard is actuated, a translation mechanism having type printingmeans, 'a coni capable of being actuated by the current impulsereceived, an impulse recording mechanism placed in position by saidselecting mechanism When a key is depressed, at the very instant it isstruck, and by said rotary receiving mechanism-in proportion asv theWorking impulses are received upon reception of a combination, and amechanism for placing in position said transmission control device rigidwith the controller translation device during the transmission of thestart impulse according to the position occupied at this moment by saidimpulse recording mechanism When a key of said keyboard is actuated andduring the reception of the stop impulse when a combination is receivedaccording to the position occupied at this moment by said impulserecording mechanism.

8. Telegraphic apparatus of the start-stop type comprisingVv incombination a keyboard having keys acted upon by the operator, aselecting mechanism actuated by the keys of said keyboard, a rotarytransmission mechanism effecting the transmission to a distance of apredetermined combination when a key of said keyboard is actuated, atranslation mechanism having printing means for effecting thetranslation controlling the impulses transmitted during the transmissionof the Working impulses of said combination, a controller translationdevice controlling said translation mechanism, a transmission controldevice rigid with said controller translation device, a rotary receivingmechanism capable of being actuated by the current impulses received, amechanism for placing in position said transmission control deviceduring the transmission of the start impulse when a key ofV saidkeyboard is actuated and during the reception of the stop impulse when acombination is received, means connecting the receiving device to alinewhen said rotary transmission device is at rest, means connectingsaid line to said transmission device when said rotary transmissionmechanism is set in motion and means combined with said rotarytransmission mechanism for insulating said receiving device from theline during the rotation of said rotary transmission mechanism.

9. Telegraphic apparatus of the start-stop type as defined in claim 8,in Which said transmission control device comprises transmissioncontacts which are rigid with combs provided on the controllertranslation device.

10. Telegraphic apparatus of the start-stop type comprising incombination a keyboard having keys acted upon by the operator, a rotarymechanism effecting the transmission to a distance of a predeterminedcombination when a key of said keyboard is depressed, a translationmechanism comprising straight controller combs rigid with transmissioncontacts and provided With notches and projections in a predeterminedorder for eiecting the translation controlling the combinationtransmitted during the transmission of the Working impulses of saidcombination, selecting levers capable of falling in said notches when analignment of five notches has been obtained or of being retained by saidprojections When said alignment is not obtained, levers carrying typeand capable of striking the paper at a single point, a ribbon Which isinterposed, at the very instant of the striking, between the type andthe paper for ensuring the printing, a universal bar holding saidselecting levers lifted When at rest and capable of abandoning them whenit is actuated, the selecting lever which iinds an alignment of fivenotches falling and being pushed by said universal bar in such a manneras to eiect the printing of the type combined with said lever, and amechanism-for causing said universal bar to act during the transmissionof the Working impulses of said combination.

11. Telegraphic apparatus of the start-stop type comprising incomb-ination a keyboard having keys acted upon by the operator,selecting levers capable of being actuated by the keys of said keyboard,a rotary mechanism effecting the transmission to a distance of apredetermined combination when a key of said keyboard is actuated, atranslation mechanism having printing vmeans for effecting thetranslation controlling the combinationl transmitted during thetransmission of the Working impulses of said combination, a controllertranslation device controlling said translation mechanism, atransmission control device rigid With the controller translationdevice, a rotary receiving mechanism, a set of needles held in aposition of rest by armatures of electromagnets and means combined Withsaid selecting levers for releasing a sub-set of said needles when a'keyis actuated.

12. Telegraphicl apparatus of the start-stop type comprising incombination a' keyboard having keys actedupon by the operator, selectinglevers capable of being actuated by the keys of said keyboard, a rotarymechanism effecting the transmission to a distance of a predeterminedcombination when a key is actuated, a translation mechanism havingprinting means for effecting the translation controlling the combinationtransmitted during thetransmission of the Workingimpulses of saidcombination, a controller translation device controlling saidtranslation mechanism, a transmission control device rigid With thecontroller translation device, a rotary receiving mechanism, a lset ofneedles held Y in position of rest by armatures o-f electromagnetsandmeans combined with said rotary receiving mechanism for releasing asub-set of said needles When a combination is received.

13. Telegraphic apparatus of the start-stop 1731136, comprising incombination a keyboard having keys acted upon by the operator, selectinglevers capable of being actuated by the keys of said keyboard, a rotarymechanism eiecting the transmission to a distance of a predeterminedcombination when a key of said keyboard is actuated, a translationmechanism having printing means for eiecting the translation controllingthe combination transmitted during the transmission of the Workingimpulses of said combination, a controller translation device comprisingcontroller translation combs and controlling said translation mechanism,transmission contacts rigid With the controller translation combs, a setof needles held in a position of rest by armatures of electromagnet'sand capable of being released by means combined with said keyboard whena kei7 is actuated, a set of rocking levers combined with? saidcontroller translation combs, and means combined with said rotarytransmission mechanism for placing in position said controllertranslation combs rigid with said transmission contacts according to theposition occupied by said needles during the transmission of the startimpulse of a combination when a key of said keyboard has been depressed.

14. Telegraphic apparatus of the start-stop type, comprising incombination a keyboard having keys acted upon by the operator, selectinglevers capable of being actuated by the keys of said keyboard, a rotarymechanism effecting the transmission to a distance of a predeterminedcombination when a key of said keyboard isv actuated, a translationmechanism having printing means for effecting the translationcontrolling the combination transmitted during the lili) transmission ofthe Working impulses of said combination, a controller translationdevice comprising controller translation combs and controlling saidtranslation mechanism, transmission contacts rigid with the controller;translation combs, a set of needles held in a position of rest byarmatures of electromagnets and capable of being released by meanscombined With said keyboard when a key is actuated, a set of rockinglevers combined with said controller translation combs, means combinedWith said transmission contacts for placing in position said controllertranslation combs according to the position occupied by said needlesduring the transmission of the start impulse of a combination when a keyof said keyboard has been depressed, and means combined with said rotarytransmission mechanism for restoring to rest position said needles atthe end of the revolution of said transmission mechanism.

l5. Telegraphic apparatus of the start-stop type, comprising incombination a keyboard having keys acted upon by the operator, selectinglevers capable of being actuated by the keys of said keyboard, a rotarymechanism effecting the transmission to a distance .of a predeterminedcombination when a key is actuated, a translation mechanism havingprinting means for effecting the translation controlling the combinationtransmitted during the transmission of the Working impulses of saidcombination, acontroller translation device which comprises controllertranslation combs receiving impulses, a transmission control devicerigid With said controller translation device, a rotary receivingmechanism, a set of needles held in a position of rest by armatures ofelectromagnets, means combined with said rotary receiving mechanism forreleasing a sub-set of said needles when a combination is received,transmission contacts rigid With the controller translation combs andmeans combined with said receiving mechanism for placing in positionsaid controller translation combs according to the position occupied bysaid needles during the reception of the stop impulse when a combinationis received.

16. Telegraphic apparatus of the start-stop type, comprising incombination a keyboard having keys acted upon by the operator, amechanism eiecting the transmission to a distance of a predeterminedcombination when a key has been depressed, a translation mechanismhaving printing means for eiecting the translation control-l ling thecombination transmitted during the transmission of the Working impulsesof said combination, a set of needles held in rest position by armaturesof electromagnets capable of being released when a key is actuated andrestored to rest position by means combined with said transmissionmechanism before the end of its revolution and means combined with saidtransmission mechanism for restoring all the keys to their liftedposition before the end of the revolution of said transmissionmechanism.

1'7. Telegraphic apparatus of the start-stop type comprising incombination a keyboard having keys acted upon by the operator, amechanisrn eiecting the transmission to a distance of a predeterminedcombination when a key of said keyboard is actuated, a translationmechanism having means for printing on a sheet of paper for effectingthe translation controlling the combination transmitted during thetransmission of the working impulses of said combination, a receivingmechanism actuated by a combination coming from the line, means formoving the printing point in the direction of advance for writing aftereach type translation and a mechanism actuated by the translationmechanism upon translation of a predetermined combination for moving theprinting point backward to the extent corresponding to a type space.

JEAN ESTOUP. Also known as Henri Estoup.

